WO2022047728A1

WO2022047728A1 - Cyclonic separation apparatus and cleaning device

Info

Publication number: WO2022047728A1
Application number: PCT/CN2020/113447
Authority: WO
Inventors: 蔡展; 朱立文
Original assignee: 东莞福莱仕智能电子科技有限公司
Priority date: 2020-09-02
Filing date: 2020-09-04
Publication date: 2022-03-10
Also published as: CN112122019A; US20220266265A1; EP3991853A4; CN112122019B; EP3991853A1

Abstract

A cyclonic separation apparatus and a cleaning device. The cyclonic separation apparatus comprises a downstream cyclonic separation assembly (200) which comprises at least one cyclone ring (220). Each cyclone ring (220) comprises plurality of cyclonic separators (300). Each cyclonic separator (300) comprsises: a cyclonic separation cylinder (310) having an upper side edge communicated with a tangential air duct (320); and a curved channel (330) provided in the upper portion of the cyclonic separation cylinder (310) and communicated with the tangential air duct (320), wherein a helix angle λ of the curved channel (330) is greater than a half cone angle a of the inverted conical cylinder (312) of the cyclonic separation cylinder (310). By combining with a particular curved channel (330) via the tangential air duct (320), the cyclonic separation apparatus can effectively and quickly discharge separated particles out of a dust discharge port in time, thus avoiding the possibility of back mixing and diffusion caused by accumulated particles, ensuring that the cyclonic separation cylinder (310) is in a clean state without accumulated particles, and facilitating improving a separation and purification effect and the service life.

Description

Cyclone separation device and cleaning equipment

technical field

The invention relates to the technical field of cyclone separation, in particular to a cyclone separation device and cleaning equipment.

Background technique

Cleaning equipment such as vacuum cleaners with cyclones are known in the prior art. Under normal circumstances, in a cyclone vacuum cleaner, the air carrying dirt and dust enters the first cyclone separator through a tangential inlet, and the dirt is separated by centrifugal force and then collected into the cavity, and the cleaner air passes through the collection chamber. The chamber enters the second cyclone, which can separate finer particles such as dirt and dust than the first cyclone. The existing second cyclone separator mainly includes a cyclone separation cylinder and an overflow cylinder, and there is an appropriate space between them, so that the dust-laden gas can form a rotating airflow belt between the two, and the particles with large mass are thrown towards the centrifugal force under the action of centrifugal force. On the cylinder wall, the gas forms a vortex, flows to the inner cylinder with lower pressure, and finally discharges upward from the overflow cylinder, which plays the role of dust removal and purification.

technical problem

Existing vacuum cleaners with secondary cyclone separation mainly focus on how to improve the separation effect of dust particles and air, such as a vacuum cleaner disclosed in a Chinese invention patent (publication number: CN105030148A, publication date: 2015-11-11), China The cyclone separation device disclosed in the invention patent (publication number: CN101816537, publication date: 2010-09-01). However, the inventors found that although the existing secondary cyclone separation can effectively improve the separation effect of dust and air, the cyclone separation cylinder of the downstream cyclone separation assembly accumulates a large amount of dust, and there is also dust accumulation outside the overflow cylinder, mainly due to the separation The remaining dust is difficult to be discharged to the dust outlet only by its own gravity, resulting in a large amount of accumulation in the outer cylinder of cyclone separation, and there is also the possibility of backmixing and diffusion escaping to the overflow cylinder. Therefore, how to discharge and separate in time and quickly It is a technical problem existing in the prior art to send the latter particles to the dust outlet.

technical solutions

In order to solve the above problems, the present invention provides a cyclone separation device and a cleaning device.

In order to achieve the above object, the present invention has adopted the following technical scheme:

A cyclone separation device comprising a downstream cyclone separation assembly comprising at least one cyclone ring, each of the cyclone rings comprising a plurality of cyclones; each of the cyclones comprising:

The upper side of the cyclone separator is connected to the tangential air duct, and the air with particles is guided into the airflow in the same direction as the tangential air duct through the tangential air duct, and then enters the cyclone separator tangentially to form a rotation airflow;

a curved channel, which is arranged in the upper part of the cyclone separator and communicates with the tangential air channel; the helix angle λ of the curved channel is greater than the half-cone angle a of the reverse cone of the cyclone separator, so that the After the swirling airflow enters the curved channel, the direction of the centripetal force of the swirling airflow changes to the side above the direction of the supporting force of the cyclone wall.

As a preferred embodiment of the cyclone separation device provided by the present invention, the curved channel is set within one lead.

As a preferred embodiment of the cyclone separation device provided by the present invention, the tangential air duct has an airflow guide path.

As a preferred embodiment of the cyclone separation device provided by the present invention, the outer side wall of the tangential air duct is a plane side wall, which is tangent to the side of the cylindrical cylinder of the cyclone separation cylinder; or, The outer side wall of the tangential air duct is a curved side wall, which is tangent to the side of the cylindrical cylinder of the cyclone separation cylinder.

As a preferred embodiment of the cyclone separation device provided by the present invention, the inner sidewall of the tangential air duct is a plane sidewall or a curved sidewall.

As a preferred embodiment of the cyclone separation device provided by the present invention, each of the cyclone separators further includes an overflow tube, the coaxial line of which is arranged in the upper part of the cyclone separation tube as an exhaust outlet ; The curved channel is located in the area between the cyclone separation cylinder and the overflow cylinder.

As a preferred embodiment of the cyclone separation device provided by the present invention, the curved channel is arranged on the wall of the cyclone separation drum or the curved channel is arranged on the outer wall of the overflow drum.

As a preferred embodiment of the cyclone separation device provided by the present invention, the two side walls of the tangential air duct or the extension surfaces thereof are respectively tangent to the cyclone separation cylinder and the overflow cylinder.

As a preferred embodiment of the cyclone separation device provided by the present invention, each of the cyclone separators further includes a flow guide inclined wall, which is disposed corresponding to the upper part of the tangential air duct.

A cleaning apparatus comprising a cyclone separation device as described above.

beneficial effect

By combining the tangential air channel with a specific curved channel, the inventor unexpectedly found that there is basically no dust accumulation on the wall of the cyclone separation cylinder after a period of use, that is, the use of the cyclone separation device of the present invention can effectively remove the separated particles Timely and rapid discharge to the outside of the dust outlet not only solves the technical problems described in the above background technology, but also avoids the possibility of backmixing and diffusion caused by accumulated particles, and at the same time ensures that the cyclone separation cylinder is clean without particle accumulation. It helps to improve the separation and purification effect and service life.

After analysis, the inventor believes that: when the airflow is rotating, under the condition of ignoring the influence of gravity, the particles in the airflow are only subjected to a supporting force (resultant force) given by one cylinder wall, and because of the rotational motion, this supporting force (resultant force) must be It will be decomposed into a centripetal force (first component force) perpendicular to the rotation axis and another second component force. In order to ensure the decomposition and balance of the resultant force, the first component force and the second component force must exist in the supporting force (resultant force). Only on both sides can the decomposition balance of the resultant force be ensured. In the present invention, the direction of the centripetal force of the rotating airflow is deflected from the direction originally perpendicular to the rotating axis and the direction of the supporting force on the wall of the cyclone separation cylinder is formed through the curved channel. The included angle, that is, the direction of the centripetal force (first component force) of the rotating airflow changes to the side above the direction of the support force of the cyclone wall, then the second component force balanced with the centripetal force (first component force) The direction is adjusted downward, which is beneficial to let the particles flow out of the dust outlet of the cyclone separator under the traction of this downward component force (the second component force). In this way, the cyclone separator of the present invention can effectively discharge the separated particles to the dust outlet in a timely and rapid manner through the combination of the tangential air channel and the curved channel, which not only solves the technical problems described in the above background technology It also avoids the possibility of backmixing and diffusion caused by accumulated particles, and at the same time ensures that the cyclone separator is in a clean state without particle accumulation, which helps to improve the separation and purification effect and service life.

If there is no curved channel, the direction of the centripetal force (the first component force F1') of the rotating airflow will not change, that is, it is below the direction of the supporting force of the cylinder wall, then according to the decomposition balance of the resultant force, it is balanced with the first component force F1' The second component force F2' of the cyclone will always face upward, and the particles will not have any force to discharge the cyclone separation cylinder, and the particles that cannot be discharged can only accumulate on the cylinder wall of the cyclone separation cylinder.

Description of drawings

1 is a schematic structural diagram of a cyclone separation device in Embodiment 1 of the present invention;

2 is a schematic structural diagram of a downstream cyclone separation assembly in Example 1 of the present invention;

3 is a schematic structural diagram of a cyclone separator in Embodiment 1 of the present invention;

Fig. 4 is the exploded schematic diagram of Fig. 3;

5 is an exploded schematic view of the cyclone separator in another state of Embodiment 1 of the present invention;

Fig. 6 is the schematic diagram of the partial sectional view of the cyclone separator of the embodiment 1 of the present invention, and the cylindrical barrel and the inverted cone barrel are partially sectionalized in the figure;

7 is a schematic diagram of force analysis of particles in a swirling airflow without a redirection channel in the prior art;

8 is a schematic diagram of the force analysis of the rotating airflow particles with redirecting channels in Example 1 of the present invention;

FIG. 9 is a schematic diagram of the force analysis of the rotating airflow particles with the redirecting channel in Example 1 of the present invention;

10 is a schematic structural diagram of a cyclone separator and a tangential air duct in Embodiment 1 of the present invention;

11 is a schematic diagram of an implementation state of an overflow tube with a curved channel in Embodiment 1 of the present invention;

12 is a schematic diagram of another implementation state of the overflow tube with a curved channel in Embodiment 1 of the present invention;

13 is a schematic diagram of another implementation state of the overflow tube with a curved channel in Embodiment 1 of the present invention;

14 is an exploded schematic diagram of the downstream cyclone separation assembly in Example 1 of the present invention;

15 is a schematic diagram of a cyclone support, a cyclone separator and a tangential air duct in Embodiment 1 of the present invention;

16 is a cross-sectional view of the downstream cyclone separation assembly in Embodiment 1 of the present invention;

17 is another exploded schematic diagram of the downstream cyclone separation assembly in Example 1 of the present invention;

Figure 18 is an exploded schematic view of Figure 1;

FIG. 19 is a cross-sectional view of FIG. 1 , wherein the thick solid lines and thick dashed lines with arrows are airflow paths.

Embodiments of the present invention

In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments are part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1

In view of the technical problems existing in the prior art, please refer to FIGS. 1-19, the present invention provides a cyclone separation device, which includes an upstream cyclone separation assembly 100 and a downstream cyclone separation assembly 200, the upstream cyclone separation assembly 100 and the downstream The cyclone separation assembly 200 is communicated through a wind guide path; the downstream cyclone separation assembly 200 includes a cyclone support 210 and at least one cyclone ring 220 disposed on the cyclone support 210, each of the cyclone rings 220 includes multiple cyclone separator 300.

Specifically, please refer to FIGS. 3-13 , each of the cyclones 300 includes:

The upper side of the cyclone separation cylinder 310 is connected with a tangential air duct 320; the tangential air duct 320 has an air flow guiding path and is tangent to the side of the cyclone separation cylinder 310 to guide the air with particles After forming the airflow in the same direction as the tangential air duct 320, it enters the cyclone separator 310 tangentially to form a rotating airflow, that is, a cyclone airflow;

The curved channel 330 is arranged in the upper part of the cyclone separation drum 310 and communicated with the tangential air channel 320 , and the helix angle λ of the curved channel 330 is greater than the inverted cone 312 of the cyclone separation drum 310 The half-cone angle a of , makes the direction of the centripetal force of the swirling airflow change to the upper side of the direction of the supporting force of the cyclone wall 310 after the swirling airflow enters the curved channel 330 .

The cyclone separation cylinder 310 includes a cylindrical cylinder 311 and an inverted cone cylinder 312; the bottom of the cylindrical cylinder 311 is connected to the upper part of the inverted cone cylinder 312, and the upper part of the cylindrical cylinder 311 is an open end 3111, which is convenient for assembly and overflow cylinder 340; an opening 3112 is formed on the side of the cylindrical cylinder 311, and the tangential air duct 320 communicates with the opening 3112 to realize the tangential connection between the tangential air duct 320 and the cylindrical cylinder 311; the inverted cone The wide end 3121 of the upper part of the cylinder 312 is connected to the lower part of the cylindrical cylinder 311 to communicate the cylindrical cylinder 311 and the inverted cone 312, and the narrow end 3122 of the lower part of the inverted cone 312 is a dust outlet for allowing separation The latter particles are discharged through the dust outlet.

The cyclone separator 300 further includes an overflow tube 340, the coaxial line 350 of which is arranged in the upper part of the cyclone separation tube 310 as an exhaust outlet to allow the separated airflow to leave the cyclone separation tube 310, the The overflow tube 340 is inserted from the open end 3111 of the cylindrical tube 311 and is arranged on a coaxial line 350 with the cylindrical tube 311 .

It should be noted that when the ratio V²/R of the high-speed rotating airflow and material velocity V to the radius of gyration R is much greater than the gravitational acceleration g, the centripetal force M*V²/R on the pollen-level particles is much greater than that of the material itself. The gravity of Mg, in order to facilitate the analysis, the effect of particle gravity is ignored.

When the airflow is rotating, ignoring the influence of gravity, the particles in the airflow are only subjected to the supporting force N (resultant force, F _N ) given by one cylinder wall. Because of the rotating motion, this supporting force N must be decomposed into a vertical The centripetal force of the rotation axis 350 (the first component force, F ₁ , F ₁ ′), the first component force is used to maintain the high-speed rotation of the particles, and the direction of the first component force is perpendicular to the airflow rotation center axis 350, because The support force F _N is perpendicular to the wall of the inverted cone 312, and according to the vector decomposition of the force, in order to maintain the vector balance between the support force F _N and the centripetal forces F ₁ and F ₁ ′, the other component force (the second force component) must be the same as the centripetal force. Only when F ₁ and F ₁ ' are located on both sides of the supporting force N can ensure the decomposition and balance of the resultant force.

Please refer to FIG. 7 , before the curved channel 330 , the rotating plane A of the rotating airflow at a certain place is perpendicular to the axis 350 of the cyclone separator 110 , and the direction of the centripetal force (component force F ₁ ′) will not change, that is, Pointing to the center of the rotation plane A and below the direction of the cylinder wall supporting force F _N , the angle between the centripetal force F ₁ ' and the cylinder wall supporting force F _N is θ, then according to the decomposition balance of the resultant force, it is balanced with the component force F ₁ ' The component force F ₂ ' will always be upward, and it can be understood that under this force, the particles rotating at high speed will not have any traction power to discharge the inverted cone 312 downward, that is, there will be no cyclone separation. No matter the force of the cylinder 310, the particles that cannot be discharged can only accumulate on the cylinder wall of the cyclone separation cylinder 310.

Please refer to FIGS. 8 and 9 , when the curved channel 330 is provided, when the airflow flows out from the tangential air outlet 325 of the tangential air duct 320 with the airflow guide path, a rotating airflow is formed along the wall of the cylindrical cylinder 311 , Since the tangential air outlet 325 corresponds to the inlet 331 of the curved channel 330 , after the swirling airflow is formed, the swirling airflow enters the curved channel 330 with the effect of centripetal force redirection. The helix angle λ is greater than the limit of the half cone angle α of the inverted cone 312 , so that after the rotating airflow enters the inverted cone 312 from the outlet 332 of the curved channel 330 , the direction of the centripetal force of the rotating airflow changes from the original one. The deflection occurs in the direction perpendicular to the rotation axis 350 , forming an upward included angle with the direction of the supporting force of the cylindrical wall of the inverted cone 312 . It can be understood that, by setting the redirection channel, an airflow rotation plane is provided in the third-dimensional space with an upward angle (the angle is the helix angle λ) with the direction of the centripetal force F ₁ ' without the redirection channel. B, that is to change the direction of the centripetal force F ₁ of the particles in the swirling airflow to the top of the support force F _N provided by the wall of the inverted cone 312. Similarly, according to the principle of mechanical force analysis: the particles in the swirling airflow are still only Received a support force F _N (resultant force) provided by the wall of the inverted cone 312, the first component of the support force F _N is the centripetal force F ₁ that maintains the high-speed rotary motion of the particles. Under the action of the channel, the direction of the centripetal force F ₁ is changed from the direction perpendicular to the center axis 350 of the airflow rotation to the airflow rotation plane with an upward angle in the third dimension space, because the supporting force F _N is perpendicular to the inverted cone. The cylinder wall of the cylinder 312 is decomposed according to the vector of the force, in order to maintain the vector balance of the resultant support force F _N and the centripetal force F ₁ , another component force F ₂ must and the centripetal force F ₁ straddle the two sides of the resultant force support force F _N respectively; In this way, when the swirling airflow is behind the redirecting passage, the direction of another component force F ₂ that the particles in the swirling airflow are subjected to is downward. The traction of a downward component force moves downward, so the particles separated from the airflow must be discharged from the inverted cone 312 to the outside of the dust discharge port.

In this way, the cyclone separator 300 of the present invention can effectively and quickly discharge the separated particles to the outside of the dust outlet through the combination of the tangential air channel 320 and the redirecting channel, which not only solves the problems in the above-mentioned background art. The technical problems described above are avoided, and the possibility of back-mixing and diffusion caused by accumulated particles is avoided, and at the same time, ensuring that the cyclone separation drum 310 is in a clean state without particle accumulation is helpful to improve the separation and purification effect and service life. Without the tangential air channel 320, when the lead of the redirecting channel is less than one lead, not only a cyclone cannot be formed, but also there is a possibility that the airflow is not separated and is directly sucked away through the overflow tube 340. When the direction of the channel is larger than one lead or even more, it only plays the role of forming a cyclone, and does not have any traction effect on the rapid discharge of accumulated particles.

Please refer to FIGS. 4 and 10 , the tangential air duct 320 includes a lower wall 321 and an outer side wall 322 and an inner side wall 323 respectively connected to both sides of the lower wall 321 . ) and the lower wall 321 to form an air duct groove 324 with a certain distance, that is, an airflow guide path, so as to guide the air with particles into an airflow consistent with the direction of the tangential air duct 320 . One end of the air duct groove 324 is connected with the opening 3112 on the side of the cylindrical cylinder 311 as a tangential air outlet 325. The outer side wall 322 of the tangential air duct 320 is connected to one side of the opening 3112, and the inner side wall 323 is connected to On the other side of the opening 3112 and tangent to the side of the cylindrical tube 311 , the air flow in the same direction as the tangential air duct 320 tangentially enters the cylindrical tube 311 of the cyclone separation tube 310 to form a rotation airflow.

Referring to FIGS. 4-6 , the inlet 331 of the curved channel 330 corresponds to the tangential air outlet 325 of the tangential air duct 320 . It can be understood that the inlet 331 is located in the extension area of the tangential air duct 320 Inside. Further, the height of the tangential air channel 320 is set corresponding to the width of the curved channel 330 ; the width of the tangential air channel 320 is set corresponding to the distance between the overflow tube 340 and the cyclone separation tube 310 . The correspondence here can be understood as equal or slightly smaller. Such a design mainly satisfies that the tangential air outlet 325 of the tangential air duct 320 is directly connected to the curved channel 330, thereby reducing the energy loss caused by the unnecessary rotational path of the airflow.

As an embodiment, the outer side wall 322 of the tangential air duct 320 can be set as a planar side wall, which is tangent to the side of the cylindrical cylinder 311 of the cyclone separation cylinder 310, and the inner side wall 323 can be set as a planar side wall Side walls or curved side walls. As another embodiment, the outer side wall 322 of the tangential air duct 320 can be set as a curved side wall, which is tangent to the side of the cylindrical cylinder 311 of the cyclone separation cylinder 310, and the inner side wall 323 is a flat side Wall or curved side walls.

Further, the inlet 331 of the curved channel 330 corresponds to the tangential air outlet 325 of the tangential air duct 320, so as to reduce unnecessary turning paths and further reduce pressure loss. In some embodiments, the outlet 332 of the curved channel 330 is disposed corresponding to the connection 313 of the cylindrical barrel 311 and the inverted cone 312 , and in other embodiments, the outlet 332 of the curved channel 330 is further It can be provided corresponding to the upper part of the inverted cone 312 . After this arrangement, the rotating airflow can directly enter the inverted cone 312 after exiting the outlet 332 .

The curved channel 330 is located in the area between the cyclone drum 310 and the overflow drum 340 . In some embodiments, the curved channel 330 may be provided on the cyclone separation drum 310; in some embodiments, the curved channel 330 may be provided on the overflow drum 340, namely the overflow drum 340. On the outer wall of the flow cylinder 340; in other embodiments, the curved channel 330 is suspended between the cyclone separation cylinder 310 and the overflow cylinder 340 through a bracket. In order to facilitate manufacture and assembly, the curved channel 330 can be directly integrated on the cyclone separation drum 310, more preferably, the curved channel 330 can be formed on the outer wall of the overflow drum 340 to avoid the cyclone The structure of the separation drum 310 is complicated, and the curved channel 330 formed on the outer wall of the overflow drum 340 is more convenient to manufacture, assemble and lower in cost than in the cyclone separation drum 310 .

In the present invention, the curved channel 330 is not mainly used to form a cyclone airflow (also called a cyclone airflow, a cyclone airflow), but is used to change the direction of the centripetal force of the cyclone airflow, then the helical lead of the curved channel 330 Not as many spiral channels as are used to create a cyclonic airflow. In some embodiments, the curved channel 330 is set within one lead, such as 2/3 lead, 1/2 lead, 1/3 lead, 1/4 lead, 1/8 lead or 1/10 lead and so on. In some embodiments, the curvilinear channel 330 can also be configured to have more than one lead. During specific implementation, appropriate adjustments may be made according to the depth of the overflow cylinder 340 inserted into the cyclone separation cylinder 310 . In order to ensure the redirection effect, the curved channel 330 is preferably set to at least 1/4 lead, that is, the revolving airflow is discharged into the inverted cone 312 through the curved channel 330 with at least 1/4 lead. . Preferably, the curved channel 130 is preferably set to be more than 1/4 lead and less than 1 lead, more preferably, more than 1/4 lead and less than 1/2 lead.

Referring to FIGS. 11-13 , detailed description will be given below by taking as an example that the curved channel 330 is disposed on the outer wall of the overflow tube 340 .

In some embodiments, as shown in FIG. 11 , the curved channel 330 may be a groove-shaped channel 333 concave and spirally formed on the outer wall of the overflow cylinder 340 , and the inlet 331 thereof corresponds to the tangential air channel The tangential air outlet 325 of 320 is provided. In some embodiments, as shown in FIGS. 12 and 13 , the curved channel 330 is a groove-shaped channel 333 formed between the curved ridges 334 and 134 which are convex and spirally formed on the outer wall of the overflow tube 340 . The duct opening 331 is disposed corresponding to the tangential air outlet 325 of the tangential air duct 320 . The curved rib 334134 can be a single-ended helical rib 334, as shown in FIG. 12 , that is, a helical rib 334 is provided on the outer wall of the overflow cylinder 340, and the one helical rib 334 can be used after one lead. The groove-shaped channel 333 is formed at the beginning, preferably, the first lead can be used as the entrance 331 here. The curved rib 334134 may also be a multi-head single-spiral helical rib 334 , as shown in FIG. 13 , that is, a plurality of helical rib 334 with the same helical direction are arranged on the outer wall of the overflow cylinder 340 . It can be understood that the heads of a plurality of the spiral ridges 334 may be disposed corresponding to the tangential air outlet 325 , that is, the head of one of the spiral ridges 334 is located on the upper wall of the tangential air duct 320 (also It can be understood as the surface formed by the tops of the two side walls) on the extension plane, the head of the second helical rib 334 adjacent to this helical rib 334 is located on the extension plane of the lower wall 321 of the tangential air duct 320 On the other hand, after being set in this way, the multi-head spiral ridges 334 at the head can be used as the inlet 331 , which just corresponds to the tangential air outlet 325 of the tangential air duct 320 . The head of the multi-head single-screw helical ridges 334 can also be arranged above the tangential air outlet 325, but the helical grooves formed by the multi-head single-screw helical ridges 334 correspond to the tangential air ducts 320. The tangential air outlet 325 is sufficient.

Further, please refer to FIGS. 3 and 11 , the cyclone separator 300 further includes a diversion inclined wall 341 , which is disposed on the upper part of the tangential air duct 320 . It can be understood that the diversion inclined wall 341 corresponds to The extension surface of the upper wall of the tangential air duct 320 is arranged, and is designed in such a way that the air flow of the rotating airflow passing through the tangential air duct 320 is prevented from being formed by the rotation of the upper end cylinder wall of the cylindrical cylinder 311 through the guide inclined wall 341 . The "upper gray ring" not only causes energy loss, but also greatly interferes with the separation effect. Preferably, the diversion inclined wall 341 is arranged on the upper part of the outer wall of the overflow cylinder 340. For the convenience of manufacture, the diversion inclined wall 341 is circumferentially extended to form a diversion inverted frustum 342, as shown in FIGS. 12 and 13 . Show. Specifically, an obtuse angle is formed between the guide inclined wall 341 and the outer wall of the overflow tube 340 , which helps to guide the revolving airflow downward into the curved channel 330 . In some embodiments, the curved channel 330 and the guide inclined wall 341 are both disposed on the outer wall of the overflow cylinder 340 as an example, and the upper end of the curved channel 330 is connected to the guide reverse frustum 342, such as The upper end of the inlet 331 of the groove-shaped channel 333 or the head of the single-ended helical rib 334 or the head of the uppermost helical rib 334 of the multi-ended single-helix helical rib 334 is connected to the flow-guiding inverted cone 342 . In some preferred embodiments, the connection point 313 of the curved channel 330 and the flow-guiding inverted frustum 342 is located in the extension area of the tangential air channel 320, so as to avoid or reduce the existence of the "upper gray ring", At the same time, it also reduces the escape of unseparated swirling air flow, and also helps to guide the swirling air flow down into the curved channel 330 .

Please refer to FIG. 16 , the inner wall of the overflow tube 340 is axially provided with a plurality of oblong spoiler ribs 343 , preferably, the elongated sides of the spoiler ribs 343 are axially connected to the overflow tube Compared with the existing arc-shaped columnar spoiler rib 343, the inner wall of the 340 can more effectively interfere with the internal rotation state of the airflow, so that it becomes a linear moving state faster, and then quickly discharges. In some preferred embodiments, the bottom of the spoiler rib 343 does not extend to the bottom of the overflow tube 340 to prevent the spoiler rib 343 from interfering with the airflow that does not enter the overflow tube 340 . The airflow not only does not become straight and discharged quickly, but flows in other directions to affect the separation effect, and does not affect the air inlet space at the bottom of the overflow cylinder 340, ensuring that the inner swirling airflow smoothly enters the bottom of the overflow cylinder 340 and passes through the prolate shape. The spoiler ribs 343 interfere with the quick discharge after straightening.

The bottom of the overflow cylinder 340 extends to the upper part of the inverted cone 312 of the cyclone separation cylinder 310 . It can be understood that the bottom of the overflow tube 340 is located at the connection 313 of the cylindrical tube 311 and the inverted cone 312 , or is located below the connection 313 . In this embodiment, preferably, the bottom of the overflow cylinder 340 extends into the inverted cone 312 and is located in the upper part thereof. In some preferred embodiments, the length of the overflow drum 340 is 0.3-0.4 times the length of the cyclone separation drum 310, but not limited thereto. Wherein, the length of the overflow tube 340 is understood as the distance between the reverse conical frustum 342 of the flow guide and the bottom of the overflow tube 340 , or the length of the overflow tube 340 from the position flush with the upper wall of the tangential air duct 320 to the overflow tube 340 distance between bottoms.

Referring to FIG. 6 , a positioning portion 344 is disposed on the upper portion of the overflow tube 340 , so that the curved channel 330 is communicated with the tangential air channel 320 correspondingly. Through the design of the positioning portion 344 , when assembling the overflow tube 340 , it can be quickly positioned and positioned to ensure that the curved channel 330 and the tangential air channel 320 are connected correspondingly, thereby reducing assembly difficulty and improving assembly accuracy. It can be understood that the positioning portion 344 can be designed to cooperate with the cylindrical barrel 311 . For example, the positioning portion 344 is configured as a snap, which is pre-set on the cylindrical barrel 311 through the snap during assembly. The blind hole 231 outside the cylinder wall is not limited to this.

It should be appreciated that the tangential air duct 320 can be integrally formed with the cyclone separation cylinder 310 , the curved passage 330 and the overflow cylinder 340 can be integrally formed, the flow guide reverse cone 342 and the positioning portion 344 are also integrally formed. It is integrally formed with the overflow cylinder 340, so that the cyclone separator 300 is easy to manufacture and assemble.

As an embodiment of the arrangement of the cyclone separators 300 , the plurality of cyclone separators 300 may be arranged as a set of cyclone rings 220 in an annular arrangement. The cyclone separators 300 in the cyclone ring 220 are circumferentially arranged along the ring wall 211 of the cyclone support 210 of the cyclone separation device. In some embodiments, the tangential air duct 320 of the cyclone separator 300 is disposed against the annular wall 211 of the cyclone bracket 210 , preferably, the annular wall 211 of the cyclone bracket 210 serves as the tangential wind Outer sidewall 322 of channel 320 . Through such a structural design, the airflow separated from the upstream cyclone separation assembly 100 communicating with the downstream cyclone separation assembly 200 mainly flows downstream along the annular wall 211 of the cyclone support 210, The air inlet 400 is the downstream outlet of the air guiding path) and can be directly turned into the tangential air duct 320 after exiting, thereby reducing the movement path of the airflow and reducing energy loss. In some embodiments, the tangential air duct 320 of the cyclone separator 300 is not disposed against the annular wall 211 of the cyclone support 210 , and it can be understood that the air inlet 326 of the tangential air duct 320 is far away from A ring wall 211 is provided with the cyclone bracket 210 .

In one embodiment, please refer to FIG. 15 , each cyclone separator 300 of the same cyclone ring 220 may correspond to one air inlet 400 , that is, one tangential air duct 320 corresponds to one air inlet 400 , and The area of the air outlet 400 is not blocked except the tangential air duct 320 to increase the air intake; at the same time, the one-to-one correspondence can avoid the collision of multiple airflows and the formation of turbulent flow. The turbulent flow will mainly cause the airflow rotation efficiency low, which in turn is not conducive to the separation of dust particles from the airflow. In another embodiment, the two cyclones 300 of the same cyclone ring 220 may correspond to one air inlet 400, that is, one air inlet 400 corresponds to two tangential air ducts 320, and the air inlet 400 Except for the tangential air duct 320, the area is not blocked, so as to increase the air intake volume. Further, the area on the front side of the air inlet 326 of the tangential air duct 320 is not blocked, that is, the airflow can enter the air inlet 326 after one turn from the air inlet 400, so as to prevent the air from entering the air inlet 400 for a second time. Turning and re-entering the air inlet 326 reduces the energy loss caused by the unnecessary movement of the airflow.

As another embodiment of the arrangement of the cyclone separators 300 , the plurality of cyclone separators 300 may be arranged in parallel with each other as a plurality of sets of cyclone rings 220 , and the plurality of cyclone separators 300 in each set of cyclone rings 220 The circumferential arrangement is annular, and adjacent groups of cyclone rings 220 are nested with each other or partially embedded in concentric circles. Taking two groups of cyclone rings 220 as an example, the first group of cyclone rings 220 has a larger number to form a relatively large annular cyclone ring 220, and the second group of cyclone rings 220 is partially connected or embedded. In the first group of cyclone rings 220, it can be understood that, in the top view state, the first group of cyclone rings 220 surrounds the second group of cyclone rings 220, and the heights of different groups of cyclone rings 220 can be determined according to actual conditions. The situation is designed to be the same or different, in order to further optimize the structure and avoid increasing the volume of the cyclone separation device, preferably, the smaller annular annular cyclone ring 220 is inserted into the larger annular annular cyclone ring 220 The inner ring is formed so that the smaller ring is stacked above the larger ring in the axial direction, and the outer ring of the smaller ring is partially in contact with or close to the inner ring of the larger ring.

It should be noted that the function of multiple cyclone separators 300 is in a certain plane. The more the number of cyclone separators 300 is, the smaller the radius of the separators 300 is. According to the centripetal force formula F=M*V²/R formula , the smaller the radius, the greater the centripetal force, the greater the centripetal force, the better the separation effect of various substances of different masses in the airflow.

Preferably, but not limitedly, the axis 350 of the cyclone separation drum 310 is inclined relative to the longitudinal center axis 500 of the cyclone separation device. It is worth noting that not all cyclones 300 in the same group of cyclone rings 220 need to be inclined at the same angle with respect to the longitudinal center axis 500 of the cyclone separation device, that is, the cyclones in the same group of cyclone rings 220 The angle of inclination of the separator 300 with respect to the longitudinal center axis 500 of the cyclone separation device may be different. Similarly, not all cyclones 300 in the same set of cyclone rings 220 need to have the same internal dimensions.

Please refer to 17-19, the downstream cyclone separation assembly 200 further includes a sealing member 230 disposed above the cyclone ring 220 . In order to facilitate the assembly of the downstream cyclone separation assembly 200 and further simplify the structure and lighten the cyclone separation device, the upper end of the tangential air duct 320 is open and the upper end of the cyclone bracket 210 is also open. At the time, the sealing member 230 is pressed and arranged above the cyclone ring 220 , that is, at least the upper end of the tangential air duct 320 and the upper end of the air inlet 400 are sealed. Preferably, the sealing member 230 is further provided with a plurality of holes 231, which are in sealing contact with the outside of the overflow cylinder 340. It can be understood that the sealing member 230 has holes 231 to avoid the overflow cylinder 340. In addition, the rest of the cyclone ring 220 is sealed.

Please refer to 17-19, the downstream cyclone separation assembly 200 further includes a cover member 240 disposed above the sealing member 230 to press and limit the sealing member 230 . It should be noted that, in specific implementation, only the cover plate member 240 may be used, or a combination of the seal member 230 and the cover plate member 240 may be used to enhance the air tightness and reduce the air flow escape. Further, the cover plate member 240 is also provided with a plurality of assembly holes 241, which correspond to the upper open end 3111 of the cyclone separation cylinder 310, so that the overflow cylinder 340 is inserted into the assembly holes 241, so that the overflow cylinder 340 is partially located in the inside the cyclone separator 310. In order to improve the sealing effect, a sealing ring 345 is further provided on the outer side of the overflow cylinder 340 above the sealing member 230 . Preferably, a positioning member 242 is further provided on the side of the mounting hole 241, which is used for positioning the overflow cylinder 340, so that after the overflow cylinder 340 is assembled, the curved channel 330 and the tangential wind Lanes 320 correspond to connections. Specifically, the positioning member 242 may cooperate with the positioning portion 344 of the overflow cylinder 340 to form a positioning structure provided between the overflow cylinder 340 and the cover member 240 .

Wherein, the positioning structure includes at least one of a concave-convex positioning structure, a snap-type positioning structure and an elastic buckle-type positioning structure, but is not limited to this, as long as it satisfies the fast alignment and positioning. Through the combination of the positioning member 242 and the positioning portion 344, when the overflow cylinder 340 is assembled, the overflow cylinder 340 can be quickly and effectively positioned and limited, so that the curved channel 330 is connected to the tangential air channel. 320 is connected correspondingly, without the need for fastening methods such as screws, which reduces the assembly process and reduces the difficulty of assembly alignment, and at the same time, the cyclone separation device can be appropriately lightened.

In some embodiments, in the concave-convex positioning structure, the positioning member 242 is a groove, and the positioning portion 344 is a convex block. During assembly, after inserting the overflow cylinder 340 into the assembly hole 241 , the protrusions are placed in the grooves to complete the assembly and positioning of the overflow cylinder 340; in some embodiments, in the concave-convex positioning structure, the positioning member 242 is an L-shaped card The positioning portion 344 is a bump. During assembly, after inserting the overflow cylinder 340 into the assembly hole 241, the bump is placed in the vertical slot of the card slot, and then the overflow is rotated. The barrel 340 makes the projections enter the transverse grooves of the clamping grooves to complete the assembly and positioning of the overflow barrel 340 , which can further limit the overflow compared to the groove positioning member 242 which is only a vertical groove. The up-and-down movement of the cylinder 340 affects the assembly accuracy and assembly efficiency; in some embodiments, in the snap-on positioning structure, the positioning member 242 is a clamping position, and the positioning portion 344 is a clamping table, which is used for assembly. When the overflow cylinder 340 is inserted into the assembling hole 241, the clamping table is placed in the corresponding position to complete the assembly and clamping of the overflow cylinder 340 to avoid its rotation; in some cases In the embodiment, in the elastic buckle positioning structure, the positioning member 242 is a hook, and the positioning portion 344 is the upper end edge of the overflow cylinder 340. During assembly, the overflow cylinder 340 is inserted into the overflow cylinder 340. After the mounting hole 241 is installed, the upper edge of the overflow cylinder 340 passes through the hook, and the hook bounces open until the overflow cylinder 340 is in place, and the hook returns to hook the upper edge of the overflow cylinder 340 . More preferably, the upper end edge of the overflow cylinder 340 is provided with a hook groove, which cooperates with the hook to further clamp the overflow cylinder 340 to prevent it from rotating. It should be noted that the specific structures of the positioning member 242 and the positioning portion 344 can be reversed.

Please refer to 18 and 19, the cyclone separation device further includes a cyclone cover 600 connected to the upper part of the cyclone bracket 210, and the cyclone cover 600 is provided with a cyclone outlet pipe 610. Specifically, the The edge of the cyclone cover 600 is sealed against the upper edge of the cyclone bracket 210, and the cyclone outlet pipe 610 is abutted on the cover plate 240 and/or the overflow tube 340, preferably but not Limitedly, abutting on the overflow cylinder 340 is convenient to quickly discharge the separated clean airflow, and at the same time, it also presses and limits the positional relationship of the overflow cylinder 340 relative to the cyclone separation cylinder 310 to avoid the cyclone separation device. During use and handling, the position of the overflow cylinder 340 may move loosely, thereby causing problems such as poor separation effect. The clean air flow discharged from the overflow drum 340 is combined into one air flow in the cyclone cover 600 and discharged out of the cyclone separation device.

Through the above arrangement of the sealing member 230, the cover member 240 and the positioning structure, this configuration automatically provides good alignment and reliable sealing between the overflow tube 340, the cyclone separation tube 310 and the air inlet 400, and the tangential air duct 320 and the Good alignment between curved channels 330 .

It should be appreciated that the tangential air duct 320 of the cyclone separator 300 , the cyclone separation drum 310 and the cyclone bracket 210 are integrally formed as the main body of the downstream cyclone separation assembly 200 , and the adjacent cyclone separation drums 310 are surrounded by Into the air inlet 400. In specific implementation, the main body of the downstream cyclone separation assembly 200 and the overflow cylinder 340 are manufactured separately, which are designed to simplify the manufacture and assembly of the cyclone separation device.

Please refer to 18 and 19, the upstream cyclone separation assembly 100 includes a dust-proof casing 120 carrying a separation cylinder 110 and a dust-collecting cover 130 . Wherein, the separation cylinder 110 includes an inner cylinder 111 and an outer cylinder 112 that are nested on a coaxial line 350, and a tangential inlet 114 is provided on the side wall of the inner cylinder 111, and one end of the tangential inlet 114 is connected to a vertical The other end of the air inlet duct 140 is connected to the outside of the outer cylinder 112 , that is, the dirty air enters through the vertical air inlet duct 140 and turns to enter the upstream separation area between the outer cylinder 112 and the dustproof shell 120 through the tangential inlet 114 , Preferably, a filter screen 115 is provided on the side wall of the outer cylinder 112 to further block some particles from entering the outer cylinder 112 . The vertical air inlet duct 140 is arranged in the inner cylinder 111 . The dust-collecting cover 130 is detachably connected to the lower part of the dust-proof case 120 . Preferably, the dust-collecting cover 130 is provided with a space for avoiding space, which is convenient for the vertical air inlet duct 140 to pass through. In the specific implementation, the dirty airflow enters from the vertical air inlet duct 140 , enters the upstream separation area through the tangential inlet 114 , and transmits the dirty airflow carrying particles to the upstream cyclone separation assembly 100 along the direction tangential to the side wall of the dust cover 120 . The separation area forms a swirling flow, and the swirling spiral flow causes a part of the larger particles carried in the air flow to be separated from the air flow, and the separated air flow enters the space between the outer cylinder 112 and the inner cylinder 111 through the filter screen 115. Compartment 113 . Further, the lower part of the side wall of the dust-proof casing 120 and the dust-collecting cover 130 together form a collector for particles, such as dirt and dust separated by the upstream cyclone assembly 100 . The dust cover 130 is detachably connected to the side wall of the dust case 120 . The collector can be emptied of the separated particles by the user opening the base.

The upper part of the dustproof shell 120 is connected to the cyclone bracket 210 , preferably, the lower part of the cyclone bracket 210 is positioned on the upper edge of the dustproof shell 120 by the side. The upper part of the separation cylinder 110 is connected to the cyclone bracket 210 . Specifically, the annular wall 211 of the cyclone bracket 210 and the inner sealing ring 212 form a drainage cavity 213 , that is, an air guide path. The compartment 113 is in sealing communication with the drainage chamber 213 to provide a communication path between the upstream cyclone assembly 100 and the downstream cyclone assembly 200 . More preferably, the compartment 113 communicates with the drainage cavity 213 through a connecting cavity. The inverted cone 312 of the cyclone separator 300 in the downstream cyclone separation assembly 200 is disposed on the dust discharge channel, and the dust discharge channel is communicated with the dust collection cover 130 .

Example 2

A method of manufacturing the cyclone separation device described in Embodiment 1, the method comprising: manufacturing a first component, the first component comprising a cyclone support 210 and a plurality of cyclone separation drums 310 arranged on the cyclone support 210 and a tangential air duct 320 , the tangential air duct 320 is in tangential communication with the cyclone separation cylinder 310 ; a second component is manufactured, and the second component includes a plurality of overflow cylinders 340 with curved channels 330 .

Further, the manufacturing method of the cyclone separation device further includes the step of assembling the first part and the second part through the cover plate member 240, that is, assembling the overflow cylinder 340 and the cyclone separation cylinder 310 to the coaxial line 350 of the cyclone separation cylinder 310. and positioning the second part relative to the first part in a predetermined position and/or orientation by using a positioning structure, so that the curved channel 330 of the overflow cylinder 340 communicates with the Tangential air duct 320 . Specifically, the inlet 331 of the curved channel 330 is set to be positioned at the tangential air outlet 325 of the tangential air duct 320 . The outlet 332 of the curved channel 330 is set to be positioned at the connection 313 of the cylindrical barrel 311 and the inverted cone barrel 312 or at the upper part of the inverted cone barrel 312 .

Further, the manufacturing method of the cyclone separation device further includes the step of assembling the downstream cyclone assembly and the upstream cyclone separation assembly.

Example 3

A cleaning device comprising the cyclone separation device of the above-mentioned embodiment 1 or the cyclone separation device manufactured by the manufacturing method of the embodiment 2. The device does not have to be a cartridge vacuum cleaner. The present invention is applicable to other types of vacuum cleaners, such as drum machines, stick vacuum cleaners or hand-held cleaners.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Back, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or Elements must have a particular orientation, be constructed, and operate in a particular orientation and are therefore not to be construed as limitations of the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed", "connected" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a It can be a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the two components. Interaction relationship unless otherwise expressly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The accompanying drawings show the preferred embodiments of the present application, but do not limit the patent scope of the present application. This application may be embodied in many different forms, rather these embodiments are provided so that a thorough and complete understanding of the disclosure of this application is provided. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure made by using the contents of the description and drawings of the present application, which is directly or indirectly used in other related technical fields, is also within the scope of protection of the patent of the present application.

Claims

A cyclone separation device, comprising a downstream cyclone separation assembly (200), comprising at least one cyclone ring (220), each of the cyclone rings (220) comprising a plurality of cyclone separators (300); it is characterized in that , each of said cyclones (300) includes:

The cyclone separator (310), the upper side of which is connected to the tangential air duct (320), and the air with particles is guided through the tangential air duct (320) into an airflow consistent with the direction of the tangential air duct (320). and then enter the cyclone separation cylinder (310) tangentially to form a rotating airflow;

A curved channel (330), which is arranged in the upper part of the cyclone separation drum (310) and communicates with the tangential air channel (320); the helix angle λ of the curved channel (330) is greater than that of the cyclone separation The half cone angle a of the inverted cone (312) of the cylinder (310) makes the direction of the centripetal force of the rotating airflow change to the cylinder wall of the cyclone separation cylinder (310) after the rotating airflow enters the curved channel (330). Supports the upper side of the force direction.
The cyclone separation device according to claim 1, wherein the curved channel (330) is set within one lead.
The cyclone separation device according to claim 1, characterized in that, the tangential air duct (320) has an airflow guide path.
The cyclone separation device according to claim 3, characterized in that, the outer side wall (322) of the tangential air duct (320) is a plane side wall, which is tangent to the cylinder of the cyclone separation drum (310). the side of the cylinder (311); or, the outer side wall (322) of the tangential air duct (320) is a curved side wall, which is tangent to the side of the cylindrical cylinder (311) of the cyclone (310) .
The cyclone separation device according to claim 4, characterized in that, the inner side wall (323) of the tangential air duct (320) is a flat side wall or a curved side wall.
The cyclone separation device according to claim 1, characterized in that, each of the cyclone separators (300) further comprises an overflow tube (340), the coaxial line (350) of which is arranged on the cyclone separation tube (310) ), as an exhaust outlet; the curved channel (330) is located in the area between the cyclone separation drum (310) and the overflow drum (340).
The cyclone separation device according to claim 6, characterized in that, the curved channel (330) is provided on the wall of the cyclone separation drum (310) or the curved channel (330) is provided on the overflow drum (340) on the outer wall.
The cyclone separation device according to claim 6, characterized in that, the two side walls of the tangential air duct (320) or their extension surfaces are tangent to the cyclone separation drum (310) and the overflow drum (340) respectively. ).
The cyclone separation device according to claim 1, characterized in that, each of the cyclone separators (300) further comprises a flow guide inclined wall (341), which is disposed corresponding to the upper part of the tangential air duct (320).
A cleaning device, characterized in that it comprises the cyclone separation device according to any one of claims 1 to 9.